I was informed today by a co-worker, that there's a company manufacturing wood pellets, that are 50% coal dust. Has anyone ever heard of this product? I'm not sure if he said the manufacturers name was "Frog" something, or his supplier was this name. He was asked if he wanted to try them out, they would supply him with a few bags, and he's to report back with his results. I asked him if they would be responsible if his pellet stove had a meltdown?